Water infiltration in the soil is an important hydrological process that occurs at the interface of the soil-atmosphere system; thus, the soil management practice used has a strong influence on this process. The aim of this study was to evaluate water infiltration in the soil and compare equations for estimating the water infiltration rate in an Ultisol after harvesting common bean (Phaseolus vulgaris L.) under simulated rainfall. Field tests with a rainfall simulator were carried out in three soil management […]

The soil management systems change the microrelief and the crop residue cover, influencing the soil and water losses. In this study evaluated the soil and water losses and estimated the water final infiltration rate in different soil managements models under simulated rainfall. Crop residues were evaluated in the field after harvest of soybean (Glycine max L. Merrill). Three soil managements systems were studied: no-tillage, disk harrow and chisel plow associated with three levels of dry soybean residue: 0; 2; and […]

To evaluate the decrease in infiltration rate in crusting soils an experiment was carried out using a rainfall simulator. Treatments were distributed in a factorial schedule 5 x 6, using five soils (Red Ultisol, Red-Yellow Ultisol, Red-Yellow Oxisol, Fluvic Entisol and Arenic Entisol) and six rainfall kinetic energies (0, 525, 1051, 2102, 3153, and 4204 J m-2) with three replications. According to the water infiltration rate and crust thickness, as determined by micromorphometry, the crust hydraulic conductivity and hydraulic resistance […]

Soil water infiltration rate, together with rainfall rates determine runoff rates, being an important parameter for erosion estimation and soil conservation studies. Measurement of infiltration rates can be performed using a double-cylinder device (CD) or a rotating-boom rainfall simulator (RS). The use of CD is less laborious in comparison with RS instruments, but results often do not agree with rates occurring in real rainfall situations, possibly due to surface crust formation. Crust formation depends both on factors that do not […]

A rotating-boom rainfall simulator, operating at a constant rainfall intensity of 64 mm h-1 for sufficient time to runoff reaches steady-rate, was used to investigate water erosion and other related parameters in three tillage systems. The experiments were carried out immediately following corn and wheat harvesting, in a sandy loam Red-Yellow Podzolic soil (Paleudult) with a 0.066 m m-1 average slope, in Eldorado do Sul, State of Rio Grande do Sul, Brazil, from 1992 to 1994. No-tillage, chiselling and disk-plowing […]